655195240 has 128 divisors (see below), whose sum is σ = 1791590400. Its totient is φ = 210643200.

The previous prime is 655195237. The next prime is 655195241. The reversal of 655195240 is 42591556.

655195240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 655195240.

It is not an unprimeable number, because it can be changed into a prime (655195241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 568665 + ... + 569815.

It is an arithmetic number, because the mean of its divisors is an integer number (13996800).

Almost surely, 2^655195240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655195240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (895795200).

655195240 is an abundant number, since it is smaller than the sum of its proper divisors (1136395160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

655195240 is a wasteful number, since it uses less digits than its factorization.

655195240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295 (or 1291 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 655195240 is about 25596.7818289722. The cubic root of 655195240 is about 868.5408402840.

The spelling of 655195240 in words is "six hundred fifty-five million, one hundred ninety-five thousand, two hundred forty".